MAXQ7670 Maxim, MAXQ7670 Datasheet
MAXQ7670
Related parts for MAXQ7670
MAXQ7670 Summary of contents
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... The flexible, modular architecture used in the MAXQ µCs allows development of targeted prod- ucts for specific applications with minimal effort. The MAXQ7670 is available in a 40-pin, 5mm x 5mm TQFN package, and is specified to operate over the -40°C to +125°C automotive temperature range. Automotive Steering Angle and Torque Sensors ...
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... XIN, XOUT to DGND ..............................-0. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...
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PGA, 64KB Flash, and CAN Interface ELECTRICAL CHARACTERISTICS (continued +5.0V +3.3V, V DVDDIO AVDD DVDD noted. Typical values are +25°C.) (Note 1) A PARAMETER SYMBOL MEMORY SECTION Flash Memory Size Flash Page Size ...
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Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface ELECTRICAL CHARACTERISTICS (continued +5.0V +3.3V, V DVDDIO AVDD DVDD noted. Typical values are +25°C.) (Note 1) A PARAMETER SYMBOL Channel Select Plus t ...
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... Maximum AVDD Bypass Capacitor to AGND +2.5V (DVDD) LINEAR REGULATOR DVDD Output Voltage No-Load Quiescent Current Output Current Capability Output Short-Circuit Current Maximum DVDD Bypass Capacitor to DGND SUPPLY-VOLTAGE SUPERVISORS AND BROWNOUT DETECTION DVDD Reset Threshold DVDD Interrupt Threshold Minimum DVDD Interrupt and Reset Threshold Difference ...
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Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface ELECTRICAL CHARACTERISTICS (continued +5.0V +3.3V, V DVDDIO AVDD DVDD noted. Typical values are +25°C.) (Note 1) A PARAMETER SYMBOL HIGH-FREQUENCY CRYSTAL OSCILLATOR Clock ...
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... ELECTRICAL CHARACTERISTICS (continued +5.0V +3.3V, V DVDDIO AVDD DVDD noted. Typical values are +25°C.) (Note 1) A PARAMETER SYMBOL Output Capacitance Maximum Output Impedance SYSTEM CLOCK System Clock Frequency f SYSCLK SPI INTERFACE TIMING SPI Master Operating f MCLK Frequency SPI Slave Mode Operating f SCLK ...
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... REFADC to AGND as close as possible to REFADC. Note 10: The digital design is fully static. However, the lower clock limit is set by a clock detect circuit. The MAXQ7670 switches to the internal RC clock if the external input goes below 166kHz. This clock detect circuit also acts to detect a crystal failure when a crystal is used ...
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PGA, 64KB Flash, and CAN Interface SAMPLE EDGE SHIFT EDGE t MCL SCLK (CKPOL/CKPHA = 0/1 OR 1/0 MODE) t MCH SCLK (CKPOL/CKPHA = 0/0 OR 1/1 MODE MIH MIS MISO MOSI Figure 1. SPI Timing Diagram in ...
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... PGA GAIN = 16V 1.6 IN-DIFF V = +1.65V IN-CM 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -40 -25 - 110 125 TEMPERATURE (°C) DVDD, RESET POWER-DOWN CHARACTERISTICS MAXQ7670 toc08 REGEN2 = GNDIO 20ms/div = 3.3V +25°C, unless REFDAC A ADC INL vs. CODE (REF ADC = +3.3V, 150.9ksps, PGA GAIN = 16V/V) 1.5 BIPOLAR MODE V = -100mV TO +100mV IN 1.0 0.5 0 -0.5 -1.0 -1.5 2 ...
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... TEMPERATURE (°C) ______________________________________________________________________________________ Microcontroller with 10-Bit ADC, Typical Operating Characteristics (continued) = 2.5V 16MHz, ADC resolution = 10 bits, V SYSCLK MAXIMUM AVDD TRANSIENT DURATION vs. BOI THRESHOLD OVERDRIVE 200 BOI ASSERTED ABOVE THIS LINE 180 160 140 120 100 ...
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Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface (V = 5.0V 3.3V, V DVDDIO AVDD DVDD otherwise noted.) RC OSCILLATOR OUTPUT FREQUENCY vs. DVDD 16.0 15.5 15.0 14.5 14.0 2.25 2.35 2.45 2.55 2.65 2.75 DVDD ...
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PGA, 64KB Flash, and CAN Interface (V = 5.0V 3.3V, V DVDDIO AVDD DVDD otherwise noted.) AVDD SUPPLY CURRENT vs. ADC SAMPLING RATE 5.7 PGA GAIN = 16V/V 5.6 5.5 5 100 1000 ADC SAMPLING RATE ...
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... SS 18 MAXQ7670 User’s Guide for a description of the SPICN register). In master mode, use an available GPIO as a slave selector and pull SS high to DVDDIO through a pullup resistor. Port 0 Bit 6/Timer 0 I/O. P0 general-purpose digital I/O with interrupt/wake-up input capability primary timer/PWM input or output ...
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... Port 0 Bit 5. P0 general-purpose digital I/O with interrupt/wake-up capability. Reset Input/Output. Active-low input/output with internal 55kΩ pullup to DVDDIO. Drive low to reset the RESET 33 MAXQ7670. The MAXQ20 µC core holds RESET low during POR and during DVDD brownout conditions. 34 DGND Digital Ground High-Frequency Crystal Output ...
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... PGA, 64KB Flash, and CAN Interface DVDDIO DVDDIO AIN0 AIN1 AIN2 AIN3 10:1 AIN4 MUX AIN5 AIN6 AIN7 AIN1 AIN3 AIN5 6:1 AIN7 MUX AIN9 AGND MAXQ7670 DVDDIO +2.5V LINEAR DVDDIO REGEN2 REGAULATOR GNDIO RESET DVDD DVDD POWER-ON DGND RESET MONITOR VDPE DVDDIO TCK JTAG INTERFACE I/O TDI ...
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... Figure 3. Simplified Analog Input Diagram (Eight Single-Ended Inputs) ______________________________________________________________________________________ Microcontroller with 10-Bit ADC, power-efficient MAXQ20 µC core consumes less than 1mA/MIPS. Refer to the MAXQ7670 User’s Guide for more detailed information on configuring and program- ming the MAXQ7670. The integrated 10-bit ADC employs an ultra-low-power SAR-based conversion method and operates up to 250ksps with PGA = 1V/V (150 ...
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... Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface P0.4/ADCCNV AIN0 AIN2 AIN4 AIN6 AIN1 AIN3 AIN5 AIN7 REFADC Figure 4. Simplified Analog Input Diagram (Four Fully Differential Inputs) 18 ______________________________________________________________________________________ TIMER 0 MAXQ7670 CONVERSION CONTROL PGG 4:1 MUX PGA 10-BIT ADC 1V/V OR 250ksps 16V/V 4:1 MUX ADCE ADCMX 3 ...
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... AIN4/AIN5, and AIN6/AIN7. Table 1 shows the single- ended and differential input configurations possible for the ADC mux. Analog Input Track and Hold A SAR conversion in the MAXQ7670 has different T/H cycles depending on whether a gain of 1 (bypass gain of 16 (PGA enabled) is selected. Table 1. ADC Mux Input Configurations ...
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... Software register bit control 2) Continuous conversion 3) Internal timer (T0) 4) External input through ADCCNV Refer to the MAXQ7670 User’s Guide for more detailed information on the ADC and mux. POR and Brownout The MAXQ7670 operates from a single, external +5V supply connected to the DVDDIO. DVDDIO is the sup- ply rail for the digital I/O and the supply input for both integrated linear regulators ...
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... When using the regulators to power AVDD and DVDD and to provide power to external devices, make sure DVDDIO’s power input can source a current greater than the sum of the MAXQ7670 sup- ply current and the load currents of the two regulators. BROWNOUT ...
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... The watch- dog reset timeout occurs 512 RC oscillator cycles after the watchdog interrupt timeout. For more information on the MAXQ7670 watchdog timer, refer to the MAXQ7670 User’s Guide. CLK_RC (15MHz) ...
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... CAN Functional Description The CAN module stores messages. Each mes- sage consists of an acceptance identifier and 8 bytes of data. The MAXQ7670 supports both the standard 11- bit and extended 29-bit identification modes. IEEE is a registered service mark of the Institute of Electrical and Electronics Engineers. ...
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... MAXQ7670 The MAXQ7670 includes a powerful hardware SPI mod- ule, providing serial communication with a wide variety of external devices. The SPI port on the MAXQ7670 is a fully independent module that is accessed through soft- ware. This full 4-wire, full-duplex serial bus module sup- ports master and slave modes. The SPI clock ...
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... SPI port. Figures 1 and 2 illustrate the timing parameters listed in the Electrical Characteristics table. General-Purpose Digital I/Os The MAXQ7670 provides seven general-purpose digital I/Os (GPIOs). Some of the GPIOs include an additional special function (SF), such as a timer input/output. For example, the state of P0.6/T0 is programmable to depend on timer channel 0 logic ...
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... The MAXQ7670’s core is a member of the low-cost, high-performance, CMOS, fully static, 16-bit MAXQ20 core µCs. The MAXQ7670 is structured on a highly advanced, accumulator-based, 16-bit RISC architec- ture. Fetch and execution operations complete in one cycle without pipelining because the instruction con- tains both the op code and data ...
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... PROGRAM FLASH EXECUTING FROM 0000h Figure 12. MAXQ7670 Memory Map ______________________________________________________________________________________ Microcontroller with 10-Bit ADC, Enabling a pseudo-Von Neumann memory map places the utility ROM, code, and data memory into a single contiguous memory map. Use this mapping scheme for applications that require dynamic program modification or unique memory configurations ...
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... The utility ROM contains user-accessible flash programming functions that erase and program flash memory. These functions are described in detail in the MAXQ7670 User’s Guide . Register sets control the MAXQ7670 functions. These registers provide a working space for memory opera- tions as well as configuring and addressing peripheral registers on the device ...
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... The internal 15MHz RC oscillator becomes the clock source • Code execution begins at location 8000h Refer to the MAXQ7670 User’s Guide for more information. The watchdog timer functions are described in the MAXQ7670 User’s Guide . Execution resumes at loca- tion 8000h following a watchdog timer reset. ...
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... This is a parameter often stated by quartz crystal vendors and is called R1. When a resonator is used in the parallel resonant mode with an external load capacitance the case with the MAXQ7670 oscillator circuit, the effective resistance is sometimes stated. This effective resistance at the loaded frequen- ...
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... DP[ *Bits indicated by an "s" are only affected by a POR and not by other forms of reset. These bits are set to 0 after a POR. Refer to the MAXQ7670 User’s Guide for more information. ______________________________________________________________________________________ Microcontroller with 10-Bit ADC, REGISTER BIT 12 11 ...
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Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface Table 4. Peripheral Register Map REGISTER M0 (0h) INDEX 0h PO0 1h — 2h — 3h EIFO 4h — 5h — 6h — 7h — 8h PI0 9h — Ah ...
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Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface ______________________________________________________________________________________ 33 ...
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Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface 34 ______________________________________________________________________________________ ...
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Microcontroller with 10-Bit ADC, PGA, 64KB Flash, and CAN Interface ______________________________________________________________________________________ 35 ...
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... RESET EXTERNAL RESET IS OPTIONAL 36 ______________________________________________________________________________________ AIN0 AIN2 -2nF MUX AIN4 -2nF AIN6 10-BIT AIN1 ADC AIN3 PGA MUX x16 AIN5 AIN7 -2nF -2nF MAXQ7670 P0.7/T0B P0.6/T0 P0.5 P0.4/ADCCNV -2nF P0.2 P0.1 GPIO -2nF P0.0 16-BIT TIMER SPI SCLK MISO JTAG MOSI CAN 2.0B -2nF SS MAXQ20 CORE -2nF ...
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... Pin Configuration TOP VIEW AIN7 + AIN6 2 AIN5 3 4 AIN4 5 REFADC MAXQ7670 6 AGND AIN3 7 8 AIN2 9 AIN1 10 AIN0 ______________________________________________________________________________________ Microcontroller with 10-Bit ADC, PROCESS: CMOS 31 30 TCK For the latest package outline information and land patterns, go *EP to www ...
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... Updated Ordering Information to indicate automotive qualified part Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...